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Chehade H, Purandare N, Fox A, Adzibolosu N, Jayee S, Singh A, Tedja R, Gogoi R, Aras S, Grossman LI, Mor G, Alvero AB. MNRR1 is a driver of ovarian cancer progression. Transl Oncol 2023; 29:101623. [PMID: 36641875 PMCID: PMC9860385 DOI: 10.1016/j.tranon.2023.101623] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 12/30/2022] [Accepted: 01/06/2023] [Indexed: 01/14/2023] Open
Abstract
Cancer progression requires the acquisition of mechanisms that support proliferative potential and metastatic capacity. MNRR1 (also CHCHD2, PARK22, AAG10) is a bi-organellar protein that in the mitochondria can bind to Bcl-xL to enhance its anti-apoptotic function, or to respiratory chain complex IV (COX IV) to increase mitochondrial respiration. In the nucleus, it can act as a transcription factor and promote the expression of genes involved in mitochondrial biogenesis, migration, and cellular stress response. Given that MNRR1 can regulate both apoptosis and mitochondrial respiration, as well as migration, we hypothesize that it can modulate metastatic spread. Using ovarian cancer models, we show heterogeneous protein expression levels of MNRR1 across samples tested and cell-dependent control of its stability and binding partners. In addition to its anti-apoptotic and bioenergetic functions, MNRR1 is both necessary and sufficient for a focal adhesion and ECM repertoire that can support spheroid formation. Its ectopic expression is sufficient to induce the adhesive glycoprotein THBS4 and the type 1 collagen, COL1A1. Conversely, its deletion leads to significant downregulation of these genes. Furthermore, loss of MNRR1 leads to delay in tumor growth, curtailed carcinomatosis, and improved survival in a syngeneic ovarian cancer mouse model. These results suggest targeting MNRR1 may improve survival in ovarian cancer patients.
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Affiliation(s)
- Hussein Chehade
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, MI, United States,C.S. Mott Center for Human Growth and Development, Department of Obstetrics and Gynecology, Wayne State University, Detroit, MI, United States
| | - Neeraja Purandare
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, MI, United States
| | - Alexandra Fox
- C.S. Mott Center for Human Growth and Development, Department of Obstetrics and Gynecology, Wayne State University, Detroit, MI, United States
| | - Nicholas Adzibolosu
- C.S. Mott Center for Human Growth and Development, Department of Obstetrics and Gynecology, Wayne State University, Detroit, MI, United States
| | - Shawn Jayee
- C.S. Mott Center for Human Growth and Development, Department of Obstetrics and Gynecology, Wayne State University, Detroit, MI, United States
| | - Aryan Singh
- C.S. Mott Center for Human Growth and Development, Department of Obstetrics and Gynecology, Wayne State University, Detroit, MI, United States
| | - Roslyn Tedja
- C.S. Mott Center for Human Growth and Development, Department of Obstetrics and Gynecology, Wayne State University, Detroit, MI, United States
| | - Radhika Gogoi
- C.S. Mott Center for Human Growth and Development, Department of Obstetrics and Gynecology, Wayne State University, Detroit, MI, United States
| | - Siddhesh Aras
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, MI, United States
| | - Lawrence I. Grossman
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, MI, United States
| | - Gil Mor
- C.S. Mott Center for Human Growth and Development, Department of Obstetrics and Gynecology, Wayne State University, Detroit, MI, United States
| | - Ayesha B. Alvero
- C.S. Mott Center for Human Growth and Development, Department of Obstetrics and Gynecology, Wayne State University, Detroit, MI, United States,Corresponding author at: 275 E. Hancock St., Detroit, MI, 48201, United States.
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